'use strict'
const path = require('path')

function resolve(dir) {
    return path.join(__dirname, dir)
  }

const name = process.env.VUE_APP_TITLE || 'AXIN博客' // 网页标题

module.exports = {
    // // 是否开启eslint保存检测，有效值：ture | false | 'error'
    lintOnSave: false,
    devServer: {
        host: '0.0.0.0',
        open: true,
        port: 8888,
        proxy: {
            // detail: https://cli.vuejs.org/config/#devserver-proxy
            [process.env.VUE_APP_BASE_API]: {
              target: `http://localhost:9000`,
              changeOrigin: true,
              pathRewrite: {
                ['^' + process.env.VUE_APP_BASE_API]: '/api'
              }
            }
          },
          disableHostCheck: true
    },
    configureWebpack: {
        name: name,
        resolve: {
            alias: {
                '@': resolve('src')
            }
        }
    },
    chainWebpack(config) {
      config.plugins.delete('preload') // TODO: need test
      config.plugins.delete('prefetch') // TODO: need test
  
      // set svg-sprite-loader
      config.module
        .rule('svg')
        .exclude.add(resolve('src/assets/icons'))
        .end()
      config.module
        .rule('icons')
        .test(/\.svg$/)
        .include.add(resolve('src/assets/icons'))
        .end()
        .use('svg-sprite-loader')
        .loader('svg-sprite-loader')
        .options({
          symbolId: 'icon-[name]'
        })
        .end()
  
      config
        .when(process.env.NODE_ENV !== 'development',
          config => {
            config
              .plugin('ScriptExtHtmlWebpackPlugin')
              .after('html')
              .use('script-ext-html-webpack-plugin', [{
              // `runtime` must same as runtimeChunk name. default is `runtime`
                inline: /runtime\..*\.js$/
              }])
              .end()
            config
              .optimization.splitChunks({
                chunks: 'all',
                cacheGroups: {
                  libs: {
                    name: 'chunk-libs',
                    test: /[\\/]node_modules[\\/]/,
                    priority: 10,
                    chunks: 'initial' // only package third parties that are initially dependent
                  },
                  elementUI: {
                    name: 'chunk-elementUI', // split elementUI into a single package
                    priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                    test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
                  },
                  commons: {
                    name: 'chunk-commons',
                    test: resolve('src/components'), // can customize your rules
                    minChunks: 3, //  minimum common number
                    priority: 5,
                    reuseExistingChunk: true
                  }
                }
              })
            config.optimization.runtimeChunk('single'),
            {
               from: path.resolve(__dirname, './public/robots.txt'), //防爬虫文件
               to: './' //到根目录下
            }
          }
        )
    }
    
}
